Answer:
Some causes can be heart disease, cancer, lung ailments, accidents, cirrhosis of the liver.
The total amount would be 19cm. this is because you add 9+4+6.
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Hope this helped xD
<span>the activity that does NOT improve stability is: A. maintaining narrow base
A wide base support is easier to balance than a narrow base support .
Wide base support will provide you with lower center of gravity, (think how it is easier to stand with two legs compared with standing with one leg)</span>